Hi @adeelshahzad sorry for miss understanding. since here is WSA's room, I thought you are planning to integrate WSA to Symantec DLP.
I was not able to find any official document in Cisco's database. maybe its best to post in ESA's room?
As Ken mentioned, the best practice is to use private IP address in your P2 interface and NAT the IP in your Firewall/router.
in this case, you can block all the unwanted traffic, and just allow TCP/80,443 (due to your networ...
Thank you so much for contacting us,
As far as your DLP server supports ICAP, there won't be any issue.
WSA uses the Internet Content Adaptation Protocol (ICAP) which allows proxy servers to offload content scanning to external...
here are some points which I would like to highlight:
 Custom Categories are top-to down ( make sure there are no other categories above the one which are expecting to hit)
 In Explicit Mode the name resolution is done from...
If you are looking for WSA's ISO file, you can download the from software.cisco.com
Navigate to Downloads and Upgrades.
also here is the installation guide: Cisco Secure Email Virtual Gateway and Secure Email and Web Manager Virtual App...